Book support



FIG. 1 is a perspective view of a book support _showing my new design; the showing of a book in broken lines is for illustrative _ purposes only and forms no part of the claimed design; _

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a side elevational view, the opposite side being a mirror image thereof;

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a perspective view with the lid in open position.

The bottom of the book support is flat and unornamented. 

The ornamental design for a book support, as shown and described. 